I32U Tcc353xGetStreamBuffer(I32S _moduleIndex, I08U * _buff, I32U _size)
{
I32U tsSize = 0;
I32U totalSize = 0;
I32U rp;
I32U wp;
I32U nextRp;
TcpalSemaphoreLock(&Tcc353xStreamSema);
rp = Tcc353xStreamRp[_moduleIndex];
wp = Tcc353xStreamWp[_moduleIndex];
Tcc353xStreamFlushFlag[_moduleIndex] = 0;
TcpalSemaphoreUnLock(&Tcc353xStreamSema);
if(rp > wp)
totalSize = wp + (TCC353X_STREAM_BUFFER_SIZE - rp);
else if (rp < wp)
totalSize = wp - rp;
else
totalSize = 0;
if(_size > totalSize)
tsSize = totalSize;
else
tsSize = _size;
tsSize = tsSize - (tsSize%188);
if (tsSize<188) {
return 0;
}
nextRp = ((rp+tsSize)%TCC353X_STREAM_BUFFER_SIZE);
if(rp+tsSize>TCC353X_STREAM_BUFFER_SIZE) { /* read twice */
I32U first;
I32U remain;
first = TCC353X_STREAM_BUFFER_SIZE - rp;
remain = nextRp;
TcpalMemcpy (&_buff[0], &Tcc353xStreamData[rp], first);
TcpalMemcpy (&_buff[first], &Tcc353xStreamData[0], nextRp);
} else {
TcpalMemcpy (&_buff[0], &Tcc353xStreamData[rp], tsSize);
}
TcpalSemaphoreLock(&Tcc353xStreamSema);
if(Tcc353xStreamFlushFlag[_moduleIndex]!=0) {
/* no update read pointer & no push data */
Tcc353xStreamFlushFlag[_moduleIndex] = 0;
tsSize = 0;
} else {
Tcc353xStreamRp[_moduleIndex] = nextRp;
if(Tcc353xStreamBufferedSize[0]>=tsSize)
Tcc353xStreamBufferedSize[0] -= tsSize;
}
TcpalSemaphoreUnLock(&Tcc353xStreamSema);
return tsSize;
}
I32S Tcc353xAdaptI2CWriteEx(I08U raddr, I08U* txdata, I32S length)
{
#if !defined (_TCSPI_ONLY_)
I32S rc;
I32S cMax, remain;
I32S i;
struct i2c_msg msg;
TcpalMemset (&msg, 0x00, sizeof(struct i2c_msg));
cMax = length / MAX_I2C_BURST;
remain = length % MAX_I2C_BURST;
msg.addr = TcpalI2cClient->addr;
msg.flags = 0;
msg.len = MAX_I2C_BURST+1;
msg.buf = (unsigned char*)I2cBuffer;
I2cBuffer[0] = (unsigned char) (raddr);
for (i = 0; i < cMax; i++) {
TcpalMemcpy(&I2cBuffer[1], &txdata[i * MAX_I2C_BURST],
MAX_I2C_BURST);
msg.len = MAX_I2C_BURST+1;
msg.buf = (unsigned char*)I2cBuffer;
rc = i2c_transfer(TcpalI2cClient->adapter, &msg, 1);
if(rc < 0)
{
TcpalPrintErr((I08S *)"[dtv][tcc3536][error] fail rc=%d, addr=0x%X, data=0x%02x\n",
(int)rc, (unsigned int)TcpalI2cClient->addr, (unsigned int)txdata[1]);
return TCC353X_RETURN_FAIL;
}
}
if (remain) {
TcpalMemcpy(&I2cBuffer[1],
&txdata[cMax * MAX_I2C_BURST], remain);
msg.len = remain+1;
msg.buf = (unsigned char*)I2cBuffer;
rc = i2c_transfer(TcpalI2cClient->adapter, &msg, 1);
if(rc < 0)
{
TcpalPrintErr((I08S *)"[dtv][tcc3536][error] fail rc=%d, addr=0x%X, data=0x%02x\n",
(int)rc, (unsigned int)TcpalI2cClient->addr, (unsigned int)txdata[1]);
return TCC353X_RETURN_FAIL;
}
}
#endif
return TCC353X_RETURN_SUCCESS;
}
